20013332344 has 8 divisors (see below), whose sum is σ = 37524998160. Its totient is φ = 10006666168.

The previous prime is 20013332257. The next prime is 20013332369. The reversal of 20013332344 is 44323331002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20013332344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250833264 + ... + 1250833279.

It is an arithmetic number, because the mean of its divisors is an integer number (4690624770).

Almost surely, 2^20013332344 is an apocalyptic number.

It is an amenable number.

20013332344 is a deficient number, since it is larger than the sum of its proper divisors (17511665816).

20013332344 is a wasteful number, since it uses less digits than its factorization.

20013332344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501666549 (or 2501666545 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20013332344 its reverse (44323331002), we get a palindrome (64336663346).

The spelling of 20013332344 in words is "twenty billion, thirteen million, three hundred thirty-two thousand, three hundred forty-four".